The Taliban have opened an office in Qatar with an eye toward beginning talks there with Afghan and U.S. officials to end the fighting in Afghanistan. U.S. officials are expected to meet Thursday with Taliban representatives in Doha, but Afghanistan said Wednesday it won't participate.

What's gone wrong?

Afghan President Hamid Karzai is upset about how the Taliban portrayed themselves in opening their Qatar office, and he feels there's a rush to talks. He wants to be in control the peace process, and he isn't.

Karzai says there are "contradictions between acts and statements of the U.S. in regard to the peace process." He says that the Taliban are emphasizing a continuation of the fighting and that "foreign powers" -- read Pakistan -- "are behind the opening of the Taliban office" in Qatar.

The Taliban, which angered Afghan officials by flying their flag and provocatively calling themselves the Islamic Emirate of Afghanistan, say they're "fighting to bring an end to the occupation" by NATO forces.

It's unlikely -- everyone has something to gain from a successful negotiation. The United States would get a dignified exit for most of its forces and an agreement on a long-term presence in Afghanistan. Karzai would get the legacy he craves as a peacemaker, and the Taliban would get a say in how the country is run.

President Barack Obama said we should expect "bumps in the road" and warned that this would be "a difficult process." And this is not the first time Karzai has stalled things.

But this is not a good start. Compromise seems to be in short supply.

What about the killing of 4 U.S. soldiers by the Taliban?

It is worrying that this came hours after the Taliban statement Tuesday. Is it coincidence or backlash? Some Taliban field commanders are unhappy with their representatives in Qatar, and behind the scenes, those close to the Taliban fear an uptick in violence near Kabul.

There's a risk that hard-liners will undermine leaders they don't trust in these talks. That's true in most peace negotiations. Some think representatives in Qatar will do Pakistan's bidding and want out of the fight now. Others may fight long after the majority agrees to peace.

Why is U.S. now brokering peace with Taliban?

Is there a grand bargain to be had?

International representatives close to the process in the past have told me not to rule it out. A bargain, where the Taliban accept U.S. bases in Afghanistan beyond the 2014 pullout date and where they agree not to attack them, is possible. The same people also say don't hold your breath, this has been a long time coming.

What are the demands?

The Taliban must renounce al Qaeda. In the past, the Taliban have demanded that all foreign troops leave the country and have asked for specific percentages of representation in the Afghan political and military structures. They also want their prisoners released from U.S.-controlled detention.

Taliban officials have said in the past that theirs is a national struggle and that al Qaeda has an international agenda. However, they would take support where they could get it. The demand to renounce al Qaeda has been made to the Taliban since their first tentative "talks" in Mecca, Saudi Arabia, in 2008.

Which Taliban are we talking about?

The Taliban of Mullah Omar, the Afghan leader or the Emir of the Islamic Emirate of Afghanistan before September 2001. His right-hand man, Tayyab Agha, heads the Taliban mission in Qatar. Other principal Taliban and Afghan opposition factions include the Haqqani faction, the TTP or Pakistani Mehsud faction and the Hekmatyar faction in the North East.

Those close to Mullah Omar's Taliban say the vast majority of Taliban support him.

International representatives close to the process say that while that may be true, powerful groups like the Haqqanis could continue an insurgency even if Mullah Omar makes peace with Kabul.

Why would the Taliban talk now?

The civil war that the Taliban had all but won in 2001 has gone into remission with the presence of international forces. If the Taliban were to fight for the whole country again, they may not do so well.

The civil war bubbles beneath the surface, and should it resurface, the former northern warlords who have profited from the U.S. presence would make a Taliban fight for supremacy much harder. In short, they may get a better deal at the table than on the battlefield.

Why has it taken so much time to get talks going?

Karzai on several occasions felt bypassed by backdoor U.S. conversations with the Taliban in Qatar. He reportedly blocked progress. The Taliban also walked out on talks when Taliban prisoners at the U.S. base in Guantanamo Bay were not released as they had expected.

Where is Mullah Omar, and why's that important?

He is widely believed to be in Pakistan, unable to move freely without Pakistan's approval. That's what his supporters believe, although Pakistan has denied it. Pakistan wants a say in Afghanistan's future. If Afghanistan drifted toward Pakistan's archenemy India, its sphere of influence would be upset.

What influence will Pakistan have on the talks?

Agha, Mullah Omar's representative, could not have established an office in Qatar and be in a position to talk to Afghans and Americans without Pakistan's permission. That's the understanding of some in the Taliban, at least.

Karzai and U.S. officials have long accused Pakistan's intelligence agency, the ISI, of supporting the Taliban in Afghanistan. The ISI denies that.

What hiccups can we expect?

Karzai says the next talks must be in Afghanistan. That is unlikely to sit well with Pakistan.

But just to get to this point has been very difficult. For the talks to work, all sides will need to be committed.